Machine



1' (No Model.) 2 Sheets-Sheet 2.

G..S. ROMINGER. Mechanical Movement. Y 1 No. 237,704.. Patented Feb;15,1881,

'WlTNE-SSES: INVEST R:

Z iZ /J TATES UNITE ATnNr FFICEG,

THE AMERICAN BUTTONHOLE, OVERSEAMING AND COMPANY, OF SAME PLACE.

SEWING MACHINE MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 237,704, dated February15, 1881.

Application filed January 10, 1881. (No model.)

To all whom it may concern Be it known that I, GEORGE S. ROMINGER, acitizen of the United States, residing in Philadelphia, Pennsylvania,have invented a new Mechanical Movement, of which the following is aspecification.

The object of my invention is to construct a device for imparting acombined vertical and longitudinal reciprocating movement to any desiredparts of machineryan object which I attain in the manner hereinafter setforth, reference being had to the accompanying drawings, in which-Figure 1, Sheet 1, is a side view of the device, part of the frame-workbeing in section Fig.2, a perspective view of part of the device; Fig.3, Sheet 2, an end view, the frame being in section; Figs. 4 and 5,detached perspective views of parts of the movement, and

Fig. 6 a diagram illustrating the result of the movement.

A is a driving-shaft adapted to suitable fixed bearings, and to thisshaft are secured the eccentric B and cam D.

On the upper end of a rod, G, is a duplex yoke, F, part of which isadapted to the eccentric and part to the cam. Thus the cam acts on thevertical portions a a of the yoke, and the eccentric on a slide, 0, onthe horizontal por- 0 tion b of the yoke. The rod G is arranged to slidein a sleeve, H, which is pivoted to, and therefore can rock on,projections d on an adjustable bar, I. When the driving-shaft is turnedtwo movements will be imparted to 3 5 the rod G-namely, a continuousvertical reciprocatin g movement due to the eccentric, and anintermittent oscillating movement due to the cam, the latter being soformed that there will be a dwellafter each movement of oscilla- 0 tion.A point, so, at the lower end of the rod G will describe a diagram, ofwhich an enlarged view is shown in Fig. 6.

The object of the slide 0 is to permit the cocentric to have a properbearing-surface, the

5 yoke being at liberty to move independently of the slide under theinfluence of the cam.

While the extent of the vertical movement of the rod in its slide due tothe eccentric never varies, the extent of the vibration of the ment, inwhich are combined a rod may be varied so as to produce diagrams, 0 Fig.6, varyingiulength, but of uniform depth. This variation in the extentof the vibration of the rod is produced in the following manner:

The bar I is adjustable in a guide, m, on the frame of the machine towhich the movement is applied, and on this bar is formed a rack, intowhich gears a pinion, (shown by dotted lines in Fig. 1,) this pinionbeing secured to a shaft, J, which has its bearing in the frame of themachine, and is provided with an armm, having a knob, 9, part of whichforms a springpin for entering any one of a number of holes in a plate,M, secured to the frame of the machine. The higher the position of thesleeve H due to the adjustment ofthe bar I, the more ext-ended will bethe vibration of the lower end of the rod, this vibration becoming lessas the sleeve is moved downward.

The plate M may be so marked near the holes as to indicate what will bespecific extent of the vibration of the lower end of the rod when thespring-pin is in any one of the holes in the plate.

In the present instance the movement is shown as applied to asewingmachine as a feed-motion, the rod G, Fig. 1, being looselyconnected to the short arm of the lever N, which is universally jointedto the frame, and the outer end of the long arm of which will possessthe movement known as the fourmotion feed. The device, however, may beapplied to any machine in which the peculiar movement of the lower endof the rod G may be available.

I claim as my invention 1. The within-described mechanicalmovedriving-shaft, A, having an eccentric, B, and cam D, a duplexyoke,F, havingaslide, c,apivotedsleeve, 0 H, and a rod, G, connected tothe yoke and adapted to the sleeve, as set forth.

2. The combination of the shaft A, having an eccentric, B, and cam D,the duplex yoke having a slide, 0, the rod G, connected to the 9 5 yoke,and the sleeve H, movable from and toward the yoke, and serving as anadjustable pivot for the rod G, as specified.

2 237,70&

is imparted to the bar I, a stop-plate, M, and a spring-retainer forholding the handle 02 in any position to which it may be adjusted on theplate, as set forth.

In testimony whereof I have signed my name I to 'this specification inthe presence of two snbscribing witnesses.

GEO. S. ROMINGER.

\Vitnesses J AMES F. ToBIN, HARRY SMITH.

